JP3961538B2 - Withdrawal hardware - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an attracting metal for mainly connecting a pillar and a horizontal member in a wooden house.

In wooden houses, especially wooden framed houses, many reinforcements such as metal fittings and metal fittings are drawn to the joint between the first structural material and the second structural material that are joined orthogonally, such as pillars and horizontal members. Seismic resistance is improved using hardware. However, such hardware has come to be used a lot recently because of interest in the earthquake resistance of houses, and most of them are hardware that is supposed to be used in new construction.
On the other hand, there are many existing wooden houses that need to be improved in earthquake resistance using reinforcing hardware. For the seismic reinforcement of such a house, it is effective to fasten the column and the horizontal member using a pull-down hardware such as a hole-down hardware or a feather metal sheet.

  However, it is desirable that the seismic reinforcement of existing houses be resident and can be constructed in as short a time as possible and at a low cost. For this reason, construction such as breaking the outer wall of the building is not required, and as shown in Fig. 1, the inner wall material is removed from the indoor side to expose the joint of the horizontal member (1) and column (2) such as a beam. There are many cases where the construction is difficult. However, if the construction is performed with the inner wall removed, the ceiling material (3) becomes an obstacle, and the construction can be performed from a slight gap between the outer wall (4) (the width dimension of the stud (5)) and the hardware ( 6) and tools (7) must be inserted.

  Since it is difficult to perform this work by directly looking at the work site, the work is almost a blind work, and the work space is narrow and construction is extremely difficult. Especially when it is necessary to operate the tool from the side, such as when fixing hardware to a pillar, it is a one-handed operation (FIG. 2). In addition, the conventional attracting hardware and wing plate bolts are provided with a through hole in either the vertical or horizontal structural material, through which the attracting bolt penetrates, and the tip of this attracting bolt is fixed to the structural material on the protruding side, etc. Work is necessary. Such work cannot be completed only from the indoor side. Eventually, work such as removing the floorboard on the second floor is necessary.

On the other hand, the attracting metal needs to have a sufficient threading dimension and a strength that does not cause deformation even with a strong pulling force so that the screwed part with the bolt is not broken even by a strong pulling force of the pulling bolt.
This invention is an attracting metal that is important as a reinforcing hardware, can be attached by construction only from the indoor side, is easy to work, and the bolt does not come out of the hardware or the hardware does not deform, The challenge is to provide a metal fitting that can withstand a large pulling force.

An attracting hardware for binding a first structural material and a second structural material orthogonal to each other in a wooden house, the first mounting hardware fixed to the first structural material and the second structural material fixed to the second structural material The two mounting hardwares are tightened with pulling bolts connected to them.
The first mounting hardware to be attached to the first structural material (for example, a beam or a horizontal member) does not have a fixing portion for the second structural material (for example, a column), and only works from below to above. Allow to be fixed. The first mounting hardware is composed of an upper member and a lower member, and the lower member is abutted against the upper member and combined. When combined, the first mounting hardware and the second mounting hardware constitute a rectangular parallelepiped member having a thick outer shape. The rectangular parallelepiped structure has rigidity capable of preventing the pulling bolt from being bent due to the strong pulling force, and the thickness of the rectangular parallelepiped can set a sufficient screwing length between the pulling bolt and the first mounting hardware. Thereby, the first mounting hardware can withstand a strong pulling force.
The lower part of the pulling bolt is coupled to a second mounting hardware fixed to the second structural member, and tightened with a pulling nut.

Since construction can be performed from the indoor side without removing the outer wall, construction can be completed in a short period of time regardless of the weather.
Since the first mounting hardware fixed to the first structural material does not have an attachment portion to the second structural material, it is easy to fix even when mounting to the lower surface of the first structural material in a narrow space. For this reason, the construction can be done with a small-scale dismantling that removes the inner wall material, and construction costs can be reduced.
Since the first mounting hardware includes a rectangular parallelepiped member, due to its rigidity, deformation such as bending of the mounting hardware does not occur even with a strong pulling force. Further, since the screw has a sufficient screw size due to the thickness of the rectangular parallelepiped, the pulling bolt does not come off even by a strong pulling force.

The first mounting hardware fixed to the first structural material, the second mounting hardware fixed to the second structural material, and a drawing bolt and a pulling nut that are coupled and tightened together.
The first mounting hardware is composed of an upper member, a lower member, and a lock nut.
When the upper member and the lower member are combined by abutting the lower member against the upper member, they become a rectangular parallelepiped member. The rectangular parallelepiped member is formed with a through hole in the vertical direction and a screw insertion hole through which a fixing screw is inserted. The screw nut is aligned with the axis of the through hole inside the rectangular parallelepiped and the locking nut is positioned.
A first mounting hardware is fixed to the first structural material, and a second mounting hardware is fixed to the second structural material. The upper part of the drawing bolt inserted into the engaging portion of the second mounting hardware from below is inserted into the through hole from below the rectangular parallelepiped member and screwed into the locking nut, and the drawing bolt is attached to the rectangular parallelepiped member. A pulling nut is screwed onto the lower portion of the pulling bolt and engaged with the second mounting hardware. Then, the pulling nut is tightened, and the first mounting hardware and the second mounting hardware are tightened with the pulling bolt. .

FIG. 3 (a) is a place where the beam 1 (first structural material) and the pillar 2 (second structural material) are coupled in a wooden framed construction method house, and is tightly coupled by the attracting hardware 8 according to the present invention. ing.
The pulling metal 8 includes a first mounting metal 9 fixed to the lower surface of the beam 1, a second mounting metal 10 fixed to the side surface of the column 2, a pulling bolt 11 and a pulling nut 12 that couple them.

  As shown in FIG. 4, the first mounting hardware 9 includes an upper member 13, a lower member 14, and a lock nut 15. The upper member 13 and the lower member 14 are combined by abutting the upper side of the lower member against the upper member 13, and when combined, become a rectangular parallelepiped member 16 (FIG. 5). The rectangular parallelepiped member 16 is formed with a through hole 17 and a screw insertion hole 19 through which a fixing screw 18 (FIG. 6A) is inserted in the periphery thereof along the vertical axis. The through hole 17 passes through substantially the center of the rectangular parallelepiped member 16. Reference numeral 20 denotes an adhesive sheet, which forms an adhesive layer.

In this embodiment, the upper member 13 in the first mounting hardware 9 integrally has portions that become the top wall 21, the left end wall 22 and the right end wall 23 of the rectangular parallelepiped member 16, and the lower member 14 is the rectangular parallelepiped member 16. The bottom wall 24, the front wall 25, and the rear wall 26 are integrally formed.
Two protrusions 27 are formed on both sides of the upper surface wall 21 in the longitudinal direction, and correspondingly, recesses 28 are formed on the upper sides of the front and rear walls 25 and 26 of the lower member 14. These uneven structures are for positioning the upper member 13 and the lower member 14 and for making the rectangular parallelepiped member 16 difficult to deform. If this fitting is made somewhat tight, the upper member 13 and the lower member 14 once fitted are not easily detached and are easy to handle.
On the inner surface side of the upper surface wall 21 of the upper member 13, a detent pawl 42 that engages with the side surface of the retaining nut 15 is formed on both sides of the central through-hole 17 (FIG. 6A).

  In this embodiment, the lock nut 15 is a nut with a detent, and a synthetic resin ring 30 is mounted around the upper side of the female screw hole 29 (FIG. 6B). The retaining nut 15 is disposed between the upper through hole 31 and the lower through hole 32 provided in the upper member 13 so as to match the axis of the female screw hole 29 of the through hole 17 formed by these, and the inner surface of the upper member 13. It is positioned by engaging with the detent pawl 42 that is suspended from.

In this embodiment, the pulling bolt 11 has male threaded portions 33 and 34 at both ends, the upper end side male threaded portion 33 is screwed to the set nut 15 in the first mounting hardware 9, and the lower end side male threaded portion 34 is pulled. The nut 12 is screwed.
The second mounting hardware 10 is integrally provided with a fixing portion 35 (FIG. 3A) fixed to the pillar 2 and an engaging portion 36 bent in a cylindrical shape, and the drawing bolt 11 is vertically connected to the engaging portion 36. Can penetrate in any direction. This structure is similar to the pillar-side member of a hole-down hardware. In FIG. 3B, reference numeral 37 denotes a washer that is passed through the pulling bolt 11 and used in combination with the pulling nut 12.

The attracting hardware 8 is attached as follows (FIGS. 7A to 7D).
The upper member 13 and the lower member 14 of the first mounting hardware 9 are combined by abutting the lower member 14 against the upper member 13. At that time, the retaining nut 15 is positioned and incorporated therein. The upper end side male screw portion 33 of the pulling bolt 11 is inserted into the lower through-hole 32 from below the rectangular parallelepiped member 16 and screwed into the internal retaining nut 15. This screwing is done so lightly that the first mounting hardware 9 does not fall.

The release sheet of the adhesive sheet 20 on the upper surface of the rectangular parallelepiped member 16 is removed, and the drawing bolt 11 is held substantially vertically while observing the positional relationship with the second mounting hardware 10 to be attached to the pillar 2, and the inner wall is used for reinforcement work. The first mounting hardware 9 is provided from the gap from which the is removed. Then, the first mounting hardware 9 is bonded to the lower surface of the beam 1 with the adhesive sheet 20. Since this is only performed while determining whether the pulling bolt 11 is substantially vertical, the comparison can be easily performed.
The pulling bolt 11 is once extracted from the first mounting hardware 9 temporarily fixed by bonding, and the first mounting hardware 9 is left on the lower surface of the beam (FIG. 7B).

  A fixing screw 18 such as a lag screw is inserted into the screw insertion hole 19 of the first mounting hardware 9, and this is screwed with the tool 7 equipped with the long bit 38 (FIG. 7C). Thereby, the first mounting hardware 9 is fixed to the lower surface of the beam 1. This work has good visibility because there are no pulling bolts 11 and second mounting hardware 10 in a narrow space, there is nothing to obstruct the tool 7, and further only by screwing the fixing screw 18 upward from below. Since there is no fixing work to the pillar 2 side, it can be easily performed. Further, if the long bit 38 is used, it is easy to look directly at the work place even from a narrow gap between the inner wall and the outer wall, and the position of each fixing screw 18 is determined by the insertion screw hole 19 of the rectangular parallelepiped member 16. The work can be performed accurately from (Fig. 8).

Again, the tip of the pulling bolt 11 is securely screwed into the set nut 15 of the first mounting hardware 9 that is permanently fixed. The pulling bolt 11 is sufficiently screwed so that the upper end side male screw portion 33 of the pulling bolt 11 reaches the upper through hole 31 of the upper member 13 (FIG. 7D). As a result, the upper end side male screw portion 33 is completely screwed with the set nut 15. Since the locking nut 15 is provided with a detent, the screwed state between the pulling bolt 11 and the first mounting hardware 9 is not loosened due to vibration or the like.
Next, the second mounting hardware 10 is combined from the lower end of the pulling bolt 11 by inserting the pulling bolt 11 into the engaging portion 36 (FIG. 3), and the second mounting hardware 10 is brought into contact with the surface of the column 2 and slid. Position while raising.

  Next, the second mounting hardware 10 is fixed to the column 2 with a lag screw or the like. A washer 37 is passed through the lower end side male screw portion 34 of the pulling bolt 11, and the pulling nut 12 is screwed to engage the pulling bolt 11 with the engaging portion 36 of the second mounting hardware 10. When fixing the second mounting hardware 10 to the column 2, the upper end of the pulling bolt 11 may swing, but since the upper end of the pulling bolt 11 is not coupled to the beam 1, some swinging is allowed, Easy to work. Then, the pull nut 12 is tightened, and the first mounting hardware 9 and the second mounting hardware 10 are tightened. Even if a strong pulling force acts on the first mounting hardware 9 through the pulling bolt 11, it has a rectangular parallelepiped structure, so that the secondary moment is larger than that of the flat plate, and the first mounting hardware 9 is not deformed.

9 and 10 show a second embodiment, and the same reference numerals are used for the same members and portions as those in the first embodiment, and the description thereof is omitted. A characteristic of the second embodiment with respect to the first embodiment is the structure of the upper member 13 of the first mounting fixture 9, the locking nut 15 and the upper end of the pulling bolt 11.
The upper member 13 has a flat plate shape (FIG. 9A) and does not have left and right end walls. For this reason, when combined with the lower member 14, a rectangular parallelepiped member 16 having both ends opened is formed (FIG. 9B). The retaining nut 15 includes a square head 39 and a nut portion 40, and the female screw hole 29 passes therethrough.

The retaining nut 15 is arranged inside the rectangular parallelepiped member 16 with the axis of the female screw hole 29 aligned with the axis of the through hole 17 of the rectangular parallelepiped member 16. At this time, the rectangular head portion 39 comes into contact with the front and rear walls 25 and 26 of the lower member 14 and is prevented from rotating, and the nut portion 40 protrudes downward from the lower through hole 32 provided in the lower member 14.
The pulling bolt 11 is further formed with a wood screw 41 protruding from the upper end of the upper end side male screw portion 33 (FIG. 10B). The wood screw has a sharp point, and when it is pressed against the lower surface of the beam 1 and rotated, it bites into the wood.

  Other configurations are not different from those of the first embodiment. Also, the mounting procedure is substantially the same. However, when the first mounting bracket 9 is fixed to the lower surface of the beam 1 with the fixing screw 18 and the pulling bolt 11 is screwed to the first mounting bracket 9, the upper end portion of the pulling bolt 11 is connected to the rectangular parallelepiped member 16. The upper end of the pulling bolt 11 reaches the upper through hole 31 of the upper member 13 by screwing into the nut portion 40 of the retaining nut 15 protruding downward from the lower surface of the upper member 13. Thereby, the wood screw 41 protruding upward from the upper end side male screw portion 33 is screwed into the lower surface of the beam 1. When the wood screw 41 is screwed into the beam 1, the upper end of the pulling bolt 11 is fixed and cannot swing. Therefore, after the upper end of the pulling bolt 11 is fixed to the first mounting hardware 9, the second mounting hardware 10 is attached to the column 2. When it is fixed to, it is necessary to position and fix it accurately to some extent, or to fix the second mounting hardware 10 to the column 2 and finally to screw in the pulling bolt 11.

The threaded dimension between the retaining nut 15 having the nut portion 40 and the lower end side male screw portion 34 of the pulling bolt 11 is long, and can resist a stronger pulling force. Further, the screwing of the wood screw 41 can prevent the screw bolt 11 and the first mounting hardware 9 from loosening due to vibration or the like, and the tightening state of the pull bolt 11 can be maintained over a long period of time. can do.
Further, the rectangular parallelepiped member 16 of the first mounting hardware 9 has a structure in which both ends are opened, but exhibits sufficient rigidity to prevent deformation due to a pulling force.

The above is an example. The rectangular parallelepiped member 16 of the first mounting hardware 9 may be a solid shape having a semicircular cross section. Further, in the embodiment, the installation at the place where the first structural material (beam) and the second structural material (column) are joined at a narrow place such as the back of the ceiling is explained. Although it has been emphasized that it is suitable for the pulling reinforcement, the pulling metal 8 of the present invention can be used at a joint where it is difficult to pull the pulling bolt 11 through one structural member in general.
The adhesive sheet 20 provided on the upper surface of the rectangular parallelepiped member 16 in the first mounting hardware 9 may not be provided.

The figure for demonstrating the conventional attachment state (vertical direction). The figure for demonstrating the conventional attachment state (lateral direction). A is a front view showing an attached state, and B is a front view of a pulling bolt (first embodiment). The disassembled perspective view of a 1st attachment metal fitting (1st Example). The perspective view shown in the assembled state. A is an exploded front view of the entire attracting metal, and B is a front view (partial sectional view) of a locking nut. (A) to (d) are diagrams for explaining an installation procedure. The figure for demonstrating the attachment state of a 1st attachment hardware. The disassembled perspective view of a 1st attachment hardware (2nd Example). (A) is a front view showing an attached state, and (b) is a front view of a drawing bolt (second embodiment).

Explanation of symbols

1 Beam (first structural material)
2 pillars (second structural material)
3 ceiling material 4 outer wall 5 stud 6 hardware 7 tool 8 attracting hardware 9 first mounting hardware 10 second mounting hardware

DESCRIPTION OF SYMBOLS 11 Pulling bolt 12 Pulling nut 13 Upper member 14 Lower member 15 Locking nut 16 Rectangular member 17 Through-hole 18 Fixing screw 19 Screw insertion hole 20 Adhesive sheet

21 Top Wall 22 Left End Wall 23 Right End Wall 24 Bottom Wall 25 Front Wall 26 Rear Wall 27 Projection 28 Recess 29 Female Screw Hole 30 Synthetic Resin Ring

31 Upper Through Hole 32 Lower Through Hole 33 Upper End Side Male Thread Part 34 Lower End Side Male Thread Part 35 Fixed Part 36 Engaging Part 37 Washer 38 Long Bit 39 Square Head 40 Nut Part 41 Wood Screw 42 Non-rotating Claw

Claims (6)

In the wooden house, the first structural member and the second structural member, which are orthogonal to each other, are attracted to each other, and are fixed to the first structural member and the second structural member. It consists of a second mounting hardware and a pulling bolt and a pulling nut that combine and tighten these,
The first mounting hardware has an upper member, a lower member, and a lock nut,
The upper member and the lower member constitute a rectangular parallelepiped member by abutting and combining the lower member with the upper member, and a screw through which a fixing screw is inserted into the rectangular parallelepiped member along the vertical axis. An insertion hole is formed,
The retaining nut is located inside the rectangular parallelepiped member and is positioned by aligning the axis of the female screw hole with the through hole,
The draw bolt has male threads on the top and bottom,
The pulling nut is screwed to the lower part of the pulling bolt to engage with the second mounting hardware, and the upper part of the pulling bolt is inserted into the through hole from the lower side of the rectangular parallelepiped member and screwed to the locking nut to pull the pulling bolt. An attracting hardware characterized in that a first mounting hardware and a second mounting hardware are tightened by tightening a lower pulling nut.   The upper member in the first mounting hardware integrally includes the upper wall, the left end wall, and the right end wall of the rectangular parallelepiped member, and the lower member includes the bottom wall, the front wall, and the rear wall of the rectangular parallelepiped member. 2. The attracting metal according to claim 1, wherein the attracting metal is integrally formed.   The attracting metal according to claim 1 or 2, wherein the retaining nut is a nut with a detent.   The pulling bolt further has a wood screw portion formed at the upper end, and when the upper end portion is screwed into the retaining nut, the wood screw portion protrudes upward from the through hole of the rectangular parallelepiped member and is screwed into the first structural member. The attracting metal according to claim 1 or 2, wherein the attracting metal is characterized.   The retaining nut has a square head and a nut portion, and a female screw hole is formed therethrough. The square head is positioned inside the rectangular parallelepiped member by aligning the axes of the through hole and the female screw hole. And the nut portion is protruded downward from the through-hole. The attracting metal article according to any one of claims 1 to 5, wherein an adhesive layer for temporary fixing is formed on an upper surface of the rectangular parallelepiped member.

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